Argue Your Case 1. A friend claims that the “human uses” energy flow in Figure 1.8 is so small compared with natural flows that our energy consumption can’t significantly affect the global environment. How do you reply to this? (1 page) 2. A friend who’s skimmed this chapter thinks it is missing a fundamental energy flow – namely, waterpower. Formulate an argument to counter this claim, and in the process, identity where waterpower fits into the energy flows of Figure 1.8.